I was browsing the coding forum and notice a few mentions of people boosting the voltage of their angel eye bulbs during their dimmed state to get them to appear brighter/whiter while the main beams are on.

From what I gathered it's fairly easy with a coding cable but I couldn't find much about it other than brief mentions of the parameter that has to be modded.
For such a straight-forward mod it seems a great way of getting LCI style angel eyes without going down the LED ring route.

Has anyone here in the UK done this modification and where would I be able to buy the cable from over here?